Circular saw vise



Sept. 13, 1938. J. DoMlNlAK' CIRCULAR SAW VISE Filed Feb. 11, 1937 Patented Sept. 13, 1938 "NITED STATES PATerrrice 2 Claims.

This invention relates to a vise or means for clamping and holding a circular saw while sharpening the same.

It is particularly aimed to provide such a de- 5 vice as may be readily mounted on a bench or the like, has parts forming substantially no obstruction to the operator and to a iile or sharpening tool.

It is further aimed to provide such a structure which will accommodate blades of different sizes and a structurewherein a gauge or measuring element may be employed as an aid in the accurate filing or sharpening of the blade.

Various additional objects and advantages will become apparent from a consideration of the description following taken in connection with accompanying drawing illustrating an operative embodiment.

In said drawing:-

Figure 1 is a view in side elevation showing my improvements at the rear, with a saw in place for sharpening;

Figure 2 is a side elevation of the parts of Figure l;

Figure 3 is a detail section taken on the line 3-3 of Figure l;

Figure 4 is a detail section taken on the line 4-4 of Figure 3; and

Figure 5 is a vertical sectional view through a modified form.

Referring specifically to the drawing, wherein like reference characters designate like or similar parts, and first to Figures 1 to 4, the devicecomprises two bulged or partly spherical jaws or sections I0 and il. Section Ill is preferably adapted to be mounted in a stationary manner o-n a bench or suitable support I2 to which end it may have an anchoring foot I3, integral therewith and adapted to be bolted or nailed at I4 to the bench or support.

Extending forwardly from the center of the concave side of jaw lil is a bolt I5, which may be integral with the jaw and which bolt is adapted to have a circular saw blade IE, removably disposed thereon, the bolt occupying the central opening Il of such blade. Section Iii is preferably interiorly reenforced by any desired number of integral webs or flanges as at IS.

The marginal edges of the jaws ill and il, engage opposite sides of the blade l 6 and the section or jaw H has a nut I9 integral with it which is screw threaded at 2B onto the bolt l5. Jaw Il also preferably has a number of openings 2| therethrough forming finger holds enabling the 55 jaw to be readily gripped and manipulated by the hand to tighten o-r loosen the jaw as desired and between. the holes, the jaw II has interior ribs I8.

It will be understood that the saw I5 may be sharpened by the :filing of its teeth 22 by means 5 of a iile or any other desired tool or instrumentality and that from time to time, the jaw I I is loosened to permit the blade to be turned a part of a revolution, reclamped, and again adjusted, etc., until all oi the teeth have been reled or l0 sharpened.

As an aid in properly ling the teeth 22, having them of the same radial extent, a measuring stem or gauge is provided as at 23, having a head at 2a for engagement with the teeth 22. Stem 23 15 is slidably adjustable radially and it is disposed partly in an opening of an enlargement 25 of the jaw Iii and engaged by a set screwA 2t screw threaded in such enlargement and which set screw is preferably manually manipulated 20 through the medium of wings 2l.

One size of the machine may be built to accommodate one or more different sizes of saw blades, as desired or separate sizes may be built for the dierent saw blades. v 25 In Figure 5 a modied form is shown which corresponds to the preceding form except a longer ioot or support is provided at I3', corresponding to that at I3. Also in this form where the opening I'l of the blade is of greater diameter than 30 that of the bolt I5', a bushing 28 is removably disposed on the bolt I5', and is of such length that the opening Il will be occupied by the same.

In addition, the jaw I l of this form loosely slides 0n the screw threads 2Q' while a nut 29 is screw 35 threaded on the screws 2E and is preferably provided with a handle 3@ to facilitate manual manipulation against the central portion of the jaw Ii. Otherwise, this form corresponds in structure to the preceding form. 40

Various changes may be resorted to provided they fall within the spirit and scope of the invention.

I claim as my invention:-

l. A circular saw vise comprising a pair of substantially similar, relatively large jaws of hollow form whose outer surfaces substantially lie in the surfaces of spheres, said jaws being marginally engageable with opposite sides of a saw, means to rigidly mount and integral with one of the jaws, a bolt integral with and extending from the hollow of the last mentioned jaw in substantial parallelism to the base of said means and through the other jaw, means associated with the last mentioned jaw in screw threaded engagement with the bolt to clamp the jaws together and a. saw therebetween.

2. A circular saw vise comprising a. pair of substantially similar, relatively large jaws of hollow form whose outer surfaces substantially lie in the surfaces of spheres, said jaws being marginally engageable with opposite sides of a saw, means to rigidly mount and integral with one of the jaws, a bolt integra-l with and extending from the 10 hollow of the last mentioned jaw in substantial JOSEPH DOMINIAK. 

